I need one important help, perhaps the question may look silly to you senior people but I am not able to find a solution, so here I am seeking your valuable help once again.

I have a dataset , datasource, dbgrid and dbchart in one of my application. I need to plot the values from a Float field in dataset with exact precision on dbchart but in dbgrid I need to show the values with two precision points

1. In the dataset add one calculated column (which will be displayed in the grid).
2. calculate its value on OnCalcFields event with the precision you want.
3. show this (calculated) field and hide the actual field in dbgrid.
4. show actual field in the chart and hide calculated field.